Hornet flying round chair (6)
I believe the answer is:
throne
'chair' is the definition.
(throne is a kind of chair)
'hornet flying' is the wordplay.
'flying' indicates anagramming the letters (letters fly around into new positions).
'hornet' with letters rearranged gives 'THRONE'.
'round' acts as a link.
(Other definitions for throne that I've seen before include "heads" , "Seat of a ruler" , "Chair of the monarch" , "Ceremonial seat" , "A king or queen sits on it" .)